Description:After an explosive finale to NCIS: LA's third season, actor and rapper LL Cool J teased to ET that the show will pick up with the same intensity when it returns for its fourth season this fall. "Season 4: it gets dirtier; it gets a little deeper," Cool J said of the upcoming season of the crime drama. "There is one shocking surprise in the opening episode. I hope you guys can handle this one...It should be a lot of fun. I hope people enjoy it."
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